发明授权
- 专利标题： Ceramic dielectrics and methods for forming the same
- 专利标题（中）： 陶瓷电介质及其形成方法
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申请号： US628643申请日： 1996-07-24
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公开(公告)号： US5846892A公开(公告)日： 1998-12-08
- 发明人: Takahiro Takada
- 申请人： Takahiro Takada
- 申请人地址： JPX Osaka
- 专利权人： Sumitomo Metal Industries Ltd.
- 当前专利权人： Sumitomo Metal Industries Ltd.
- 当前专利权人地址： JPX Osaka
- 优先权： JPX6/213870 19940907; JPX7/213771 19950822
- 主分类号： C04B35/46
- IPC分类号： C04B35/46 ; C04B35/465 ; H01B3/12 ; H01P7/10
摘要：
The present invention relates to a ceramic dielectrics. It is difficult to downsize a MgTiO.sub.2 -base ceramic composition conventionally used, having an insufficiently high relative dielectric constant (.di-elect cons..sub.r), less than 20, while a CaTiO.sub.3 -base ceramic composition, having a small value of Q, is not suitable for electronic devices processing a signal in the high-frequency-bandwidth. Moreover, it is difficult to control the temperature coefficient of resonant frequency of these conventional ceramic compositions. In the present invention, a ceramic dielectrics having a composition represented by xMgTiO.sub.3.(1-x)CaTiO.sub.3.y(Ln.sup.1.sub.1-w Ln.sup.2.sub.w).sub.2 Ti.sub.2z O.sub.3+4z (wherein Ln.sup.1 and Ln.sup.2 are lanthanoids, and w, x, y, and z are values in the ranges of 0.ltoreq.w
公开/授权文献
- US5110483A Separation of particles adsorbed on carrier material 公开/授权日：1992-05-05
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